复杂围岩小净距隧道施工技术探索

Constructional skill of small space tunnel with composite surrounding rock

结合某高速公路隧道施工项目,介绍了复杂围岩小净距隧道洞口开挖及加固、洞身开挖及施工、初期支护、二衬施作及监控量测等技术要点,以期为类似条件下隧道施工积累经验。

Combining with the constructional project of a highway tunnel,the paper introduces technique focal points like excavation and enforcing of opening,excavation and construction of the cave body,primary support, second time construction,as well as supervision and so on of small space tunnel with composite surrounding rock,so as to accumulate experience for such kind of construction.